A water- and oil-repellent composition comprises. In one embodiment, a module modifies a template of the reference set of biometric data with the candidate set of biometric data when the user is authenticated. The virtualized source code may include virtualized runtime threads that may be scheduled by the scheduler onto hardware threads that share hardware resources. The at least one MEMS die and a semiconductor chip are contained within the spacer. A light actuated upon receiving a signal from another vehicle and visible to the other vehicle indicates to the other vehicle that it is approaching a vehicle. The control system starts, stops, modulates, and limits water supplied to the supersaturating system based on the humidity or dew-point temperature of the ambient air, dry-bulb temperature of the ambient air, compressor inlet air flow, and gas turbine parameters indicating operation at or near maximum output.